Card-displaying device



J. E. BIRDSALL.

CARD DISPLAYING DEVICE.

APPUCATION FILED NOV. 14. 1914.

I 175. Patented Nov. 18, 1919.

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WWNESSES James ZTB/Mw \NVENTUR .wzwzt;

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ATTURNEY J. E. BiRDSALL.

CARD DISPLAYING DEVICE.

AgPucATmN FILED NOV. H, 1914.

5 SHEETS-SHEET 2- WITNESSES 0765 .Z/ffia INVENTUR ATTEIRNEY J. E.BIRDSALL.

CARD DISPLAYING DEVICE.

APPLICATION FILED NOV. 14, 19m.

1,322,175. Patented Nov. 18, 1919.

5 SHEETS$HEET 3.

" WITNESSES 5 17/1786 5. B/Mww V 'INVENTUR ATTORNEY 1. E. BIRDSALL.

CARD DISPLAYING DEVICE.

APPLICATION FILED NOV. 14, I914.

Patented Nov. 18, 1919.

5 SHEETS-SHEET 4.

J. E. BIRDSALL.

CARD DISPLAYING. DEVICE.

APPLICATION'FILED Nov. 1.411914.

1 ,322, 1 7 Patented Nov. 18, 1919.

5 SHEETSSHEET 5- Witnassgs T R &. /Z. QQWW INVEN n ATTURNEQI marrns'rATEs PATENT opinion.

JAMES E. BIRDSALL, OF PHILADELPHIA, YENNSYLVANIA, ASSIGNOR, BY MESNEASSIGNMENTS, TO DONALD CAMPBELL, OF BROOKLYN, NEW YORK.

GARD-DISPLAYIN G DEVICE.

Specification of Letters Patent.

Patented Nov. 18, 1919.

To all whom it may concern.

Be it known that I, JAMES E. BmDsALL, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented a new and useful Card-Displaying Device, of

which the following is a specification.

My invention relates to apparatus in which fiat signs or cards aredisplayed successively; and the objects of my improvement are, first, toprovide a positive means for circulating the signs; second, to afford anadjustable control so that the mechanism may be caused to operatecontinuously, or at desired intervals; third, to provide a convenientmeans for setting the machine to operate at predetermined intervals,which may 'be regular or irregular and which may be readily changed fromtime to time; and,

fourth, to afford a simple method whereby the machine may be caused tooperate irre spective of the pre-arranged intervals, by the operation ofan independent automatic device.

I attain these objects} by the mechanism illustrated in theaccon'ipanying drawings, in which- Figure 1 is a side elevation of theapparatus with parts of the framework removed and showing the electricaland clock connections i fiagrammatically; Fig. 2, a top view of themachine as it appears after the removal of the signs and sign supportingparts; Fig. 3, a rear elevation of the apparatus; Fig. 4, a perspectiveview of the ex terior mounted on an automatic shoe polishing machine,and showing in broken lines the oblique position of the interiormechanism; Fig. 5, a perspective detail view of the contact member to beattached to a clockhand; Fig. 6, a perspective detail view of thesign-earner engaging tooth; Fig. 7, a detail View from above showingoperation of the sign-removing cams; Fig. 8, a view of a clock face withmy attachment applied; and, Fig. 9, an elevation of the same showingparts in section.

Similar index characters refer to similar parts throughout the severalviews.

I arrange the signs in upper, A, and under, B, tiers, inclined so thateach exit end, 1 and 2, shall be lower than each entrance end, 3 and 4..The display positions are at the exit end, 1, of the lower tier and theentrance end, 3, of the upper tier, opposite to each of which positionsare openings or wmdows in the case, P, designated, J and K, Figs. 1 and4.

The particular construction shown in Figs 1, 2 and 3, is designed to bemounted on the top of my automatic shoe-polishing machine, for whichapplication for patent 1s now pending, (Serial No. 687,529, filed March30, 1912), in an inclined position within the case (see Fig. 4) and,therefore, as the drawings show the machine standing horizontally andvertically, the upper tier appears horizontal. When, however, the framecarrying the mechanism and signs is installed in its normal obliqueposition, to facilitate the reading of the signs, the upper tier assumesa slant toward the rear, as mentioned above.

The upper tier is maintained by the support 6 and the lower by similarsupports, 7 and 8, which latter, however, are turned up at the back soas to extend to the top, E, of the frame and form rear guards, 7 a and8, for the signs. The signs are kept in alinement by the side rails (1being previously inserted in holders, 0, which are metal frames adaptedto easily receive and retain a card or thin sign, and provided at eachupper corner with a tooth shaped lug 72 (see Fig. 6), adapted to beengaged and carried by a rotating worm.

These holders are in sequence raised in the front side of the frame by apair of revolving screws or worm-shafts, 9 and 10, extending from thebottom of the framework, D, to the top thereof, E, in which they arejournaled. The threaded or screw part of these shafts extends from theupper part of the exit end of the lower tier to the extreme top of theentrance end of the upper tier. Similarly, the signs are lowered by theaction of the pair of worms, 11 and 12, at the rear of the tiers. Theelevating worms rotate in opposite directions and the thread of one isright and the other left; likewise the lowering worms, 11 and 12, havecontrary directions of rotation and reverse threads.

To shaft 10 (best seen in Fig. 2) is fixed a pinion 13 meshing with theintermediate gear 15 on shaft 15 which shaft also carries anintermittent pinion 17, adapted to alternately drive gear 19 on driveshaft 20 operated by worm wheel and worm on motor shaft 21. Similarlyshaft 11 carries pinion 1a in mesh with gear 16 on shaft 16 to which isalso fixed pinion 18 adapted to be driven and left idle by gear 19. Themotor shaft, journaled in the thrust-box 22*, car ries a worm, 22, whichoperates the wormwheel 23 fast to the drive-shaft 20. This transmissionimparts to shafts 10 and 11 the desired timing and direction ofrotation. On each elevating worm-shaft, 9 and 10, is a bevel gear, 2 1and 25, meshing with the bevels, 26 and 27, fixed on the transverseshaft, 28, journaled in standards 28 whereby the worm 9 is rotated atthe same times as is the worm 10, but in a reverse direction asindicated by the arrows, Fig. 2.

Similarly, the lowering worm 12 is given a reverse rotation withrelation to worm 11, by the bevel-gears 29 and 30 on these worm shafts,meshing, respectively with bevels 31 and 32 fixed on the rear transverseshaft 33, held in standards, 33 cast in the bottom, D, of the frame.

At that part ofeach worm where the helical thread starts, y, and thatpart, 00, where it terminates, the shaft portion or central cylindricalsolid part is tapered to a sufliciently decreased diameter to permit ofthe entrance and egress of the tips of the engaging lugs, 72, of thesign-holders C. These lugs are formed similarly to a single tooth of aworm-wheel and are therefore concave on the face so as to embrace thecylindrical body portion of the worm and be thus retained in properengagement, but by reducing the diameter of the center shaft portion asdescribed I allow them to be freely passed into and out of mesh withthe, worm at its extremities. At the upper termination of each elevatingworm-thread, 9 and 10, adjacent to the reduced core just mentioned isfixed a throw-out cam, 34%, 35, adapted as it rotates with the worm andis brought into contact with lug 72, to gently, but very positivelyclear the helical thread of the lug and to urge the sign holder onto theinclined supports, and past the catching points of the upper tierretaining clips 4:6 and 41-7, secured to the framework and projectinginto the line of travel of the signholders, as shown in'broken lines inFig. 7 The lowering worms, 11 and 12, are provided with similar cams, 36and 37 at their lower terminations.

Near the bottom of each receiving end of both tiers, between the worms,and extending beyond the plane defined by each pair, are the pressuresprings, 66 and 67 in front, and 68 and 69 in rear, adapted to assist intransferring each sign to its supports. Anti-friction rollers, and 71,are ex-v tended transversely between corresponding ends of the supports,5 and 6, against which the signs are held by the pressure springs untilreaching the supports, they are urged over in synchronism with theaction of the throw-out cams.

The intermittent drive gear, 19, is provided with a slot-cam, 38,adapted to impart one complete reciprocation longitudinally of themachine with each revolution. Slidably positioned through the standard39, so as tobe thus acted upon by this cam, is a rod 39, having theroller cam-follower 10 depending therefrom and into the slot cam 38, andconnected, at its other end, by a pin 11 through slots 42 to a verticallever, 43, which is pivoted about centrally to lugs, 44, on theframework. The upper end of mediately a number of rollers, 44%, normallypositioned directly back of the plane of the downward course of a sign,so as to be brought forward by the action of the lever 43 a sulficientdistance to pass an imaginary line between the catching points of thelower pair of retaining springs, 46 and L7.

To a standard, 18, a vertical lever, 19, is pivoted near its lower end.The function of this lever is to carry a pawl, 50, which is presseddownwardly by a spring, 51, into engagement with any tooth, 52, of theratchet wheel 53 and lies in position to be reciprocated, in a directiontoward the ratchet wheel. by the action of the aforesaid rod, 39, and inthe contrary direction by a spring 5 1. The ratchet wheel is fixed onthe shaft 55, journaled in standards 56 and 57 from the base, D. Alsofixed to this shaft is a disk, 58, having in its periphery a transversenotch, 59, adapted to receive a triangular lug, 60, secured upon ayieldable electric contact, 61, so as to press normally on the peripheryof the disk and when the latter is rotated to automatically enter saidnotch as presented. A second spring contact, 62, is positionedsubstantially parallel with and adjacent to the former, 61, so as to befirmly pressed thereby and keep closed an electric circuit through themotor 21, when lug 60 is not within notch 59, but to be separated whenthe lug enters the notch, whereby said electric circuit is opened. Ablocking cam, 73, is eccentrically pinioned by an adjusting screw, 73,to the disk, to afford a ready means of barring both sides of the notch59, so as to prevent the entrance of the triangular lug therein and thushinder the actuating current from being shut off. The contacts, 61 and62, are mounted by non-conductors, 63, on the arm, 64. On the shaft 55is also placed an adjustable starting arm, 65, by a slight motion ofwhich the shaft may be turned enough to force the lug 60 out of notch,59, and make the contact between 61 and 62, whereby the motor isstarted. Almost any ordinary this lever is bifurcated and carries inter-77, of the clock,

clock may be utilized ranging the mechanism.

My attachment for the clock, as shown in Figs. 8 and 9, consistsprincipally of two members. The annular member, 74, is composed of hardrubber, vulcanized fiber or any other suitable non-conducting material,and is inlaid preferably flush with its face, with two concentricmetallic rings, 75 and 76. As it is to be attached to the face or dial,74"-,'it is purposely made somewhat thin or slender so as to lie beneaththe hands. In the drawings it is shown secured by screws, 7 7, throughthe fiber into the dial.

Each metallic ring, 75, 76, is provided with a series of equidistantperforations arranged in a circle, 78, and adapted to receive and holdsmall contact plugs, 79. The number of perforations in the inner ringbeing equal to the number in the outer, the latter are spaced fartherapart so that correspond ing perforations shall lie on the same radiusand be covered by the minute hand at the same time. The plugs, 79, areall alike and therefore interchangeable among all the perforations,which are exactly the same in size and shape. These plugs are used inpairs, one on the outer and one on the inner ring, 011 the same radius.As the number of perforations may be made so as to allow for even morethan one per minute, although I have shown but sixty, it will be seenthat various arrangements and combinations as to timing are providedfor. To the minute hand, 80, is attached at 81, the contact formingmember, 82, so as to be loosely suspended longitudinally with the handand radially with relation to the rings, 75 and 76, in such position as,by the progress of the hand, to make contact with both plugs in any andall pairs, and thus successively to close and open an electric actuatingcircuit connected to the rings and including the motor, 21.

The electrical connections, shown diagrammatically on Fig. 1, are asfollows: The circuit starts, for instance, at pole 83 of the mainswitch, 83 and passes through the lead 84 to the motor 21, thence bylead 85 to the clock 74 the outer ring 75, and any plug or plugs, 79inserted therein; the return is by lead 87 directly from the inner ring,76, of the clock, and its attached plugs, 79 to the other pole, 86, ofthe main switch. Thus, when the switch, 83*, is closed the only break inthe circuit through the motor is between the two rings 75 and 76. Thisbreak will, of course, be closed whenever the bridge 82 makes connectionbetween a pair of plugs, 79 and 79 and current will flow so long as thecontact is maintained. As the passage of the bridge 82 across a pair ofplugs is relatively very short, it is necessary for the purpose ofarpredetermined starting of the to maintain the closed circuit thusestablished for the requisite period of time to operate the mechanism toshow the desired number this purpose, therefore, a shunt circuit iscarried around the clock by one parallel lead, 88, from one clock lead,85, to the spring contact 62, already described, and another lead inparallel, 89, from the other clock lead 87 to the other spring contact62.

From what has been said it is obvious that, the main switch 83 beingclosed, and the clock running, just as soon as the minute hand passesover a set of plugs, as at 11:15 in Fig. 8, the circuit through themotor 21 will be closed and the machine will start. The cam 38 will thusbe rotated so to reciprocate the rod 39 and impart a push to the lever49, causing the pawl to carry the ratchetwheel 53 around the distance ofone tooth, and forcing the triangular lug out of notch 59, whereupon theshunt circuit through leads 88 and 89 will be closed be tween contacts61 and 62. The motor will therefore continue to run until the ratchetwheel 53, and the accompanying disk, 58, have completed one revolution,irrespective of the breaking of the contact between plugs 79 and 79 bythe movement of the bridge 82, on the clock hand. At the completion ofone revolution of the disk 58 the lug 60 enters notch 59, and the stops.

Assuming the tiers to be properly sup plied with sign-carriers and thegearing to be in the positions shown in Fig. 2, the operation of mydevice is as follows: The motor, whether started by the clock reaching11:15 or by a slight touch to the arm 65, being started, the teeth indrive gear 19 begin to mesh with and to rotate the pinion 17, whichthrough gear 15 and pinion 13 rotates the elevating worm shaft 10, andthis, through bevel gears 25, 27, 26 and 24, reversely rotates itscorresponding worm 9. As soon as these worms commence to rotate theforemost sign on the lower tier having its lugs, 72, held within thethreads of the worms by the spring retainers 46, will coinmence to rise.It will continue its upward course until it has been brought opposite tothe receiving end of the upper tier, A, whereupon the two throw-outcams, 34 and 35, will press the sign from engagement with the worms andin conjunction with the two pressure springs, 66 and 67, deposit it onsupports, 5 and 6, with its upper portion held in position by thecatching points of the retaining springs or clips, 46 and 47. Thepressure of this ejection of the sign is transmitted through the entiretier, forcing all the signs along the slender supports 5 and 6 betweenthe guard rails C and cans ing lugs 72 on the extreme rearmost sign topass into the threads of the lowering worms of signs, by auxiliarymeans. For

motor consequently 11 and 12. Just as this stage is reached the teeth ingear 19 leave those of pinion 17 and the rotation of the elevating wormsceases. Matters rest thus until the teeth in gear 19 progress to andengage pinion 18 and, by action of gears 16 and 14, cause the rotationof worm 11, and, through the bevel chain, 29, 31, 32 and 30, the reverserotation of worm 12. The rotation of these worms gently lowers therearmost upper sign just "forced into engagement until it reaches thereceiving end of the lower tier, when it is, as in the case of therising sign just' described, treated by the cams, 86 and 37, and springs68 and 69, so as to be deposited on the lower supports, 7 and 8. Byreason of the angle at which I tilt backward the entire mechanism, asshown in Fig. a, to most suitably apply it to my shoe polishing machine,1 find it expedient to use auxiliary means to insure the proper progressof the lower tier of signs. Therefore, just about the time that theteeth in the intermittent drive gear, 19, are leaving the pinion 18, theeccentric section of the slot-cam 38 reaches the roller lO whereby lever43, through the action of rod 39, is slowly moved about on its pivot,44, so as to press against the rear of the sign just lowered and to"force it along the supports so as to securely deposit it behind thecatching points oi? the lower clips, l6

-and 47 By this operation the present foremost sign, originally thesecond, on the lower tier has been pushed forward so as to bring andhold its lugs, 7.1, properly wi-hin the threads of the worms 9 and 10,to be raised when these worms once again start to rotate. It will beseen that the display pause for each sign is largely dependent upon theproportion of blank periphery on the intermittent gear, which aifords avery convenient and simple means of timing. By a mere substitution oigears of different proportions for gears 19, 1 1 and 15, almost anyrange can be produced.

As one sign changes with each revolution of gear 19, and as ratchetwheel 53 turns the distance, as the machine is shown in these drawings,of one tooth in the same time, it is plain that as many signs will beshown during one complete operation of the machine as there are teeth inthe ratchet wheel. If, however, it should be desired to show butone-half, one third, etc., of the signs, instead of a sign for everytooth 52, the adjustable stop, 90, under the horizontal lug 19 of thepawl lever 49, may be so set that spring 5 1- will hold the said leverover and nearer to the end of the slidable rod 39, so that the pawl willengage a tooth or two, etc., nearer to front, and so that contact between the rod and the lever will occur earlier, and the pawl thus carrywheel an increased distance. If, on the otherhand, it be intended thatthe machine the ratchet.

shall automatically operate continuously until purposely stopped, theblocking cam 73 is readily turned to cover the opposite extremes ofnotch 59 so as to prevent lug 60 from entering and opening the circuitas already described.

When the machine is to be operated in conjunction with some othermechanical device, as is the case in its use by me in connection with myshoe polishing machine, so as to be operated simultaneously therewith,irrespective of the operation caused by the clock and in additionthereto, a rod, link, or any other suitable connection (not shown) ismade between the adjustable arm 65, and a convenient movable member of?the cooperating machine. By the arrangement shown-on Fig. 8, the clockstarts the signs circulating every fifteen minutes, the running of thesigns consumes about six minutes, so that there is an idle interval ofabout six minutes, unless a user of the shoe polishing machineintervenes. In this event the introduction of the coin and starting ofthe shoe polishing machine, raises a rod and gives the arm 65 justenough turn to throw out lug 60 and close the circuit at 61 and 62.

As the prime object of my invention is to advertise, this very efiectivemethod of securing a reader for the signs, which may be employed inconjunction with weighing machines, electric shocking machines, in fact,with any of the numerous and varied coin controlled and other devices sopopular now in catching the attention of the general public, is one ofits valuable and novel features.

For the purpose of illustrating my inven tion I have shown in thedrawings the form at present preferred by me, although it is to beunderstood that the various instrumentalities of which my inventionconsists can be variously arranged and organized, and that my inventionis not to be limited to the precise arrangement and or ganization hereinshown and described, and that I hereby reserve the right to re-organiceand re-arrange these instrumentalities within the scope oi the claims.

I am aware that the system of circulating signs from tier to tier is notnovel and that patents have been issued for inventions for this purpose,and, therefore, I do not claim such a system broadly, but, I claim:

1. In a device of the character described, in combination, movable signsarranged in tiers, a pair of worm shafts adjacent to each end of saidtiers, lugs on said signs adapted to be engaged by said worms so as tomove said signs by the rotation of said worms, means to engage said lugsand said worms, means comprising one convolution of each worm moredeeply out than the others and a cam extending therefrom, to

disengage said lugs from said worms and means to rotate said wormshafts.

2. In a device of the character described, in combination, an inclinedrack, signs yieldably ranked thereon, reciprocable rollers adapted topress forward a sign at the rear of said rack so as to advance the rankalong said rack and thereby move the foremost sign therefrom, and meansto reciprocate said rollers.

3. In a device of the character described,

in combination, movable signs supported edgewise in tiers, a pair ofworms, one right and one left, at each end of each tier and extendingbetween the tiers, means to rotate said worms in reverse directions,lugs on said signs adapted to be engaged by said worms, means,comprising one convolution of each worm more deeply out than v theothers and a cam extending therefrom, for disengaging said lugs fromsaid worms, and moving said signs away from said worms and onto saidtiers at the instant of said disengagement.

4. In a device of the character described, in combination, movable signsarranged edgewise in tiers on slender supports, pairs of worms, oneright and one left in each pair, adapted to rotate in reverse directionsbetween corresponding ends of said tiers, means to so rotate said worms,lugs on said signs adapted to be engaged by said worms, means forengaging and disengaging said lugs and said Worms, springs adjacent tosaid worms adapted to transfer said signs away therefrom and onto saidsupports, transverse rollers between said supports to facilitate suchtransfer, and means to cause said pairs of worms to rotateintermittently.

5. In a device of the character described, in combination, movable signsarranged edgewise in tiers on slender supports, pairs of worms, oneright and one left in each pair, adapted to rotate in reverse directionsbetween corresponding ends of said tiers, means to so rotate said worms,lugs on said signs adapted to be engaged by said worms, means forengaging and lugs and said worms, means for moving said signs away fromsaid worms and into said tiers at the instant of disengagement, means torotate one pair of worms during the intermission of rotation of theother pair, and means to adjust the timing of said intermissions.

6. In a device of the character described a conveying member comprisinga shaft,- a portion thereof having screw threads, some of said threadsbeing deeper than others, and a cam originating at one of said deeperthreads and extending beyond the circumference of said shaft.

7. In a device of the character described, a conveying member comprisinga shaft, a P t on thereof hevins rew th the disengaging said first andlast of said threads being deeper than the intermediate threads and acam originating at one of said deeper threads and extending beyond thecircumference of said shaft.

8. In a device of the character described, conveying means comprising apair of rotatable shafts, a portion of each shaft having screw threads,some of said threads in each shaft being deeper than others, a camoriginating at one of said deeper threads in each shaft and extendingbeyond the circumference thereof, and means to rotate said shafts.

9. In a device of the character described, in combination, movable signsarranged edgewise on upper and lower supports, conveyer worms at one endto elevate said signs serially, conveyer worms at the other end to lowersaid signs serially, means on said signs to adapt them to be engaged andmoved by said worms, means to engage and disengage said signs and saidworms and to progress the former along said supports from end to end,means to rotate the worms at each end intermittently, but at the sametimes and in reverse directions, and means to cause the worms at eitherend to pause while those at the other end are rotating.

10. In a device of the character described, in combination, an inclinedrack, signs yieldably stacked thereon, reciprocable rollers adapted topress forward a sign at the rear of the signs so as to advance theentire stack along the said rack and thereby move the foremost signtherefrom, a rotating cam, and intermediate means between said cam andsaid rollers to cause the latter to reciprocate.

11. In a device of the character described, in combination, movablesigns arranged in tiers, means to move said signs in a verticaldirection, from tier to tier, and to move the same in a relativelyhorizontal direction from end to end of each tier, a ratchet wheelhaving as many teeth as there are signs on both tiers, means for turningsaid ratchet wheel the distance of one tooth with the transfer of eachsign, adjustable means for varying the number of teeth of said ratchetwheel advanced with the transfer of each sign, and means actuated bysaid ratchet wheel to stop all motion of the parts upon the completionofone revolution.

12. In a device of the character described, in combination, movablesigns arranged in tiers, means to move said signs in a verticaldirection from tier to tier, and to move the same in a relativelyhorizontal direction from end to end of each tier, a ratchet wheelhaving teeth corresponding in number to the entire number of signs,means for partially turning said ratchet wheel varying distances asdesired with the rogress of each sign, a disk adapted to rotate inconformity With said ratchet Wheel, a

disk.

13. In a device of the character described, conveying means comprising apair of rotable shafts, a portion of each shaft having screw threads,the first and last of said threads in each shaft being deeper than theintermediate threads, a cam originating at one of said deeper threads ineach shaft and extending beyond the circumference thereof and means torotate said shafts.

14. In a device of the character described, conveying means comprising apair of rotable shafts, a portion of one shaft having right screwthreads, a portion of the other shaft having left SCIGW threads, somethreads in each shaft being deeper than others, a cam originating at oneof said deeper threads in each shaft and extending beyond thecircumference thereof and means to rotate said shafts in reverse.direction.

15. In a device .of the character described, conveying means comprisinga pair of rotable shafts, a portion of one shaft having right screwthreads, a portion of the other shaft having left screw threads, thefirst and last of said threads in each shaft being deeper than theintermediate threads, at

cam originating at one of said deeper threads in each shaft andextending beyond the circumference thereof, and means to r0- tate saidshafts in reverse directions.

16. In a device of the character described, in combination, movablesigns arranged in tiers, means to move said signs in a vertical.direction from tier to tier and to move the same in a relativelyhorizontal direction from end to end of each tier, a ratchet Wheelhaving teeth corresponding in number to the entire number of signs,means for partially turning said ratchet Wheel varying distances, asdesired, with the progress of each sign, a disk adapted to rotate inconformity With said ratchet Wheel a motor to operate the device, aswitch in the circuit through said motor adapted to be closed and openedby each revolution of said disk, a clock-actuated switch also in saidcircuit adapted to start said motor at predetermined intervals vvherebythe rotation of said disk is originated, and, an adjustable'leverconnected with said disk whereby its rota tion may be originated by theoperation of a separately actuated apparatus between said predeterminedintervals so as to operate the card displaying mechanism in combinationWith said separately actuated apparatus.

JAMES E. BIRDSALL. lVitnesses AUGUSTINE C. IVIETZINGER, MARY LAWLER.

